Year	constant 2010 US$
1977	6960267.58339232
1978	8370167.82380681
1979	9678936.28105298
1980	11499313.6080453
1981	14015718.3035391
1982	14015718.3035391
1983	14319114.5247045
1984	14896162.4274752
1985	15342333.1358571
1986	15955074.660432
1987	16591612.078153
1988	16942600.0856107
1989	17448260.3089429
1990	17971767.7790074
1991	16984259.3512066
1992	15966988.0789772
1993	15169811.0582691
1994	15473192.4612077
1995	14699855.352496
1996	15294763.5769051
1997	16210878.6594748
1998	17103240.9960884
1999	17870650.8140659
2000	18406024.633014
2001	18752466.0598145
2002	19749166.1465551
2003	20039559.8095029
2004	21003311.1330455
2005	22027032.6922502
2006	24763305.4433909
2007	27026833.175472
2008	24557855.0866243
2009	27164250.4378575
2010	24770888.8888889
2011	25457277.8724946
2012	21579478.6588102
2013	25375777.6249015
2014	26359097.7244705
2015	26758754.0188171
2016	28449000.2927248
2017	27672489.032659
2018	27810851.1749203